产业融合视角下网络基础设施的经济结构转型效应研究  

The Economic Structural Transformation Effect of Network Infrastructurefrom the Perspective of Industrial Integration

作　　者：李琳[1] 娜梅雅 宋培 LI Lin;NA Meiya;SONG Pei(School of Economics,Nankai University,Tianjin 300071,China)

机构地区：[1]南开大学经济学院,天津300071

出　　处：《南京财经大学学报》2023年第5期1-12,共12页Journal of Nanjing University of Finance and Economics

基　　金：国家社会科学基金重大项目“大国经济条件下构建自主可控的现代产业体系重大问题研究”(21&ZD099);天津市研究生科研创新项目“数字技术驱动经济结构优化转型的内在机理、效应评估与政策创新”(2021YJSB037)。

摘　　要：基于产业融合视角构造多部门一般均衡模型,将网络基础设施以资本扩展型技术进步纳入模型并阐明其对经济结构转型的影响机理,指出当消费替代弹性较低、中间工业品部门的要素替代弹性高于其他中间品部门时,网络基础设施有助于推动中间工业品部门资本深化,提高货物部门的生产水平,促使服务部门的产值份额不断上升,即经济结构转型升级。进一步采用2006—2020年地级市面板数据,以“宽带中国”战略作为网络基础设施建设的政策冲击展开实证评估,研究表明:网络基础设施显著促进了经济结构转型,该结论在经过一系列稳健性检验后依旧成立;异质性分析发现,网络基础设施的经济结构转型效应在不同市场环境和城市层级下具有明显差异;机制检验发现,以资本生产率为代表的技术机制与以生产性服务业发展为代表的产业融合机制是网络基础设施推动经济结构转型的重要渠道。Based on the perspective of industrial convergence,this paper constructs a multi-sector general equilibrium theory model,incorporates network infrastructure into the model with capital expansion technology progress,and clarifies its impact mechanism on economic structural transformation,promoting the continuous increase in the share of output value in the service sector,namely the transformation and upgrading of economic structure.Using the panel data of prefecture-level cities from 2006 to 2020,and taking the Broadband China Strategy as the policy impact of network infrastructure construction,this research shows that network infrastructure has significantly promoted the transformation of economic structure;this conclusion remains valid after a series of robustness tests.Heterogeneity analysis reveals that the economic structure transformation effect of network infrastructure differs significantly according to different city levels and market environments.Mechanism testing shows that technological mechanisms represented by capital productivity and industrial integration mechanisms represented by the development of productive service industries are important channels for network infrastructure to promote economic structural transformation.

关 键 词：网络基础设施 产业融合 经济结构转型 生产性服务业 资本生产率 

分 类 号：F062.9[经济管理—政治经济学]